Udoroot (CR 5)

Huge Plant
Alignment: Always neutral
Initiative: +0; Senses: blindsight

AC: 14 (-2 size, +6 natural), touch 8, flat-footed 14
Hit Dice: 6d8+18 (45 hp)
Fort +8, Ref +2, Will +3
Speed: 0 ft.
Space: See text
Base Attack +4; Grapple +8
Attack: na
Full Attack: na
Damage: -
Special Attacks/Actions: Psionics
Abilities: Str 3, Dex 10, Con 16, Int -, Wis 13, Cha 9
Special Qualities: Electricity immunity, cold and fire resistance 20, psionics
Advancement: 7-16 HD (Huge); 17-20 HD (Gargantuan)
Climate/Terrain: Temperate and warm forest and underground
Organization: Solitary or patch (2-4)
Treasure: 1/2 coins; 50% goods; 50% items

Source: Psionics Handbook

Udoroots are innocuous-looking carnivorous plants that use psionic powers to overcome other creatures for use as fertilizer.

By far the largest part of an udoroot is its massive, bulbous root system, the bottommost tip of which can reach 30 feet below the surface. An udoroot sends six shoots to the surface, each of which culminates in a "crown" resembling a mature sunflower with reddish seeds, white petals, and a particularly tough and woody stalk. The crowns grow in a roughly circular pattern. The seeds are tough but nutritious and can be made into bread if ground.

A subterranean version of the udoroot grows "upside down" near the edges of Underdark communities.